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Regulation of catalytic reaction via vapor - phase condensation. 1. / Ye-Mao Yu in Industrial & engineering chemistry research, Vol. 51 N° 26 (Juillet 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 26 (Juillet 2012) . - pp. 8735–8741 Titre : Regulation of catalytic reaction via vapor - phase condensation. 1. : Experimental study on the reaction rate hysteresis loops Type de document : texte imprimé Auteurs : Ye-Mao Yu, Auteur ; Zhen-Min Cheng, Auteur ; Zhi-Ming Zhou, Auteur Année de publication : 2012 Article en page(s) : pp. 8735–8741 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Regulation  catalytic  reaction Résumé : To experimentally verify the existence of reaction rate hysteresis in the gas phase operation due to capillary condensation, benzene hydrogenation was carried out in a fixed bed under isothermal condition. Through changing the flow rate of benzene and cyclohexane mixture in a sequence from low to high and then vice versa, a group of distinctive conversion profiles was obtained. By plotting the reaction rate against the relative vapor pressure, hysteresis loops in reaction rate are confirmed to exist. It was observed the reaction rate kept nearly constant in the region of p/p0 < 0.6 and decreased rapidly in the region of p/p0 > 0.8. In providing an intrinsic understanding on the influence of vapor condensation on the reaction rate of a partially wetted catalyst, the reaction rate and internal effectiveness factor are plotted against the catalyst wetting fraction, from which a new correlation between the overall reaction rate and catalyst wetting fraction was proposed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201901z [article] Regulation of catalytic reaction via vapor - phase condensation. 1. : Experimental study on the reaction rate hysteresis loops [texte imprimé] / Ye-Mao Yu, Auteur ; Zhen-Min Cheng, Auteur ; Zhi-Ming Zhou, Auteur . - 2012 . - pp. 8735–8741. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 26 (Juillet 2012) . - pp. 8735–8741 Mots-clés : Regulation  catalytic  reaction Résumé : To experimentally verify the existence of reaction rate hysteresis in the gas phase operation due to capillary condensation, benzene hydrogenation was carried out in a fixed bed under isothermal condition. Through changing the flow rate of benzene and cyclohexane mixture in a sequence from low to high and then vice versa, a group of distinctive conversion profiles was obtained. By plotting the reaction rate against the relative vapor pressure, hysteresis loops in reaction rate are confirmed to exist. It was observed the reaction rate kept nearly constant in the region of p/p0 < 0.6 and decreased rapidly in the region of p/p0 > 0.8. In providing an intrinsic understanding on the influence of vapor condensation on the reaction rate of a partially wetted catalyst, the reaction rate and internal effectiveness factor are plotted against the catalyst wetting fraction, from which a new correlation between the overall reaction rate and catalyst wetting fraction was proposed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201901z